‘I don’t usually wear something that’s on the mannequin the way it is,’ says Hen’a Soonderji. View more photos

The Workplace: When staffers at the interior-design firm AB Concept meet new clients, it’s crucial that they convey a sense of style right away, says co-founder Ed Ng. “You start your presentation the moment you step into the conference room.”

The company, which employs about 60 designers, project managers and 3-D visualizers in Hong Kong and Bangkok, counts the Mandarin Oriental, Four Seasons and Waldorf Astoria among its clients.

The Dress Code: AB encourages employees to have their own fashion personality, says Mr. Ng. For associate director Stanley Kwok, that means no black clothes: “Black is for funerals.” Mr. Ng prefers to dress up his look with one of his hundreds of pocket squares instead of a tie.

“I don’t usually wear something that’s on the mannequin the way it is,” says Hen’a Soonderji, senior artistic manager. “I believe in adding my own character to a thing.”

She’s also a believer in using clothes to express how she’s feeling that day. “One day I could be very sober and sophisticated, wearing Celine,” she says. “I want that to be expressed outside, because then I’m in sync with myself.”

Ready to Wear: Communications manager Grace Sun has accompanied Mr. Ng to industry events in Milan, factory visits in Frankfurt and on-site visits when projects are completed. Their travel style, she says, requires that they arrive looking presentable. “We’re off the plane, we’re in the meeting. And after the meeting, we might get a few hours shut-eye and then we’re in another meeting, or we’re back on the plane. So you don’t really have time to go back to the hotel and freshen up,” she says.

To style herself while packing light, she makes the most of accessories. “I use scarves and belts to change the outfit,” she says. “I might just bring one suit.”

Form Follows Function: Dmitry Solodovnikov, a senior 3-D visualizer who models proposed designs, veers toward neutral hues. “Because we work with colors and lighting situations, I don’t want any colors in my outfit to affect the monitor,” he says.

Still, even though his work mainly keeps him at his desk, he’s conscious of what he wears in the office. “Even if you don’t meet the clients, clients can see us when they visit,” he says. “We have to be a little bit more presentable.”

Influences: While some staffers name famous couturiers as their style icons (“Coco Chanel,” Ms. Sun says, adding that she often reminds herself to take one accessory off as she leaves for work each morning), others simply look outside. “I get inspired by nature,” Ms. Soonderji says. “I just went on a boat trip in Hong Kong, and the water is teal green. And it makes sense to me why this teal color has taken off.” See photos of the AB Concept team